The ALTER TABLE … DROP COLUMN command is always replicated to all Subscribers whose subscription contains the columns being dropped, even if you disable the replication of schema changes.

To disable replication of schema changes

On the Subscription Options page of the Publication Properties - <Publication> dialog box, set the value of the Replicate schema changes property to False.

Click OK.

To propagate only specific schema changes, set the property to True before a schema change, and then set it to False after the change is made. Conversely, to propagate most schema changes, but not a given change, set the property to False before the schema change, and then set it to True after the change is made.